/**
 * Copyright 2013-2020 the original author or authors from the JHipster project.
 *
 * This file is part of the JHipster project, see http://www.jhipster.tech/
 * for more information.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

const { merge } = require('../utils/object-utils');
const Validations = require('../jhipster/validations');

module.exports = class JDLValidation {
    constructor(args) {
        const merged = merge(defaults(), args);
        this.name = merged.name;
        this.value = merged.value;
    }

    toString() {
        let string = `${this.name}`;
        if (this.value || this.value === 0) {
            string += `(${formatValidationValue(this.name, this.value)})`;
        }
        return string;
    }
};

function defaults() {
    return {
        name: 'required',
        value: '',
    };
}

function formatValidationValue(name, value) {
    if (name === Validations.PATTERN) {
        return getPatternValidationValue(value);
    }
    return value;
}

function getPatternValidationValue(value) {
    if (value instanceof RegExp) {
        return value.toString();
    }
    return `/${value}/`;
}
